公开(公告)号：EP2843732A1

公开(公告)日：2015-03-04

申请号：EP12875464.5

申请日：2012-07-04

Applicant: Shihlien Apex China Holding Co., Limited

Inventor： ZHANG, Guiping ,  ZHANG, Panyi

IPC: H01M2/26 ,  H01M10/058

CPC classification number: H01M10/0431 ,  B23K26/206 ,  H01M2/263 ,  H01M10/0422 ,  H01M10/049 ,  H01M10/0525 ,  H01M10/0587 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011 ,  Y10T29/301

Abstract: The invention discloses a high-capacity cylindrical lithium ion battery. Tab-position end faces are shaped; a high frequency oscillation and pressure are applied on to make the foil bodies softened in the scope of 0.1-6.5 mm. The foil bodies of the anode and cathode are entangled together and compressed. Increase in weight and density of the foil bodies in a unit volume and increase in rigidity of the compressed foil bodies of the tab-position end faces lays a foundation and to enlarge the effective welding area and improve the welding strength of the laser welding between the tab-position end faces and the collector plates. The foil bodies in the prior art are cut into strips and easy to break by pulling when welded on the collector plates, and bear small currents. The invention achieves a great improvement in comparison with the prior art.

Abstract translation: 本发明公开了一种高容量圆柱形锂离子电池。 制表位端面成型; 施加高频振荡和压力以使箔体软化为0.1-6.5mm的范围。 阳极和阴极的箔体缠结在一起并压缩。 薄片体的单位体积重量和密度的增加以及片状位置端面的压缩箔体的刚度的增加为奠定了基础，扩大了有效焊接面积，提高了激光焊接的焊接强度 片状端面和集电板。 现有技术中的箔体被切割成条，并且当​​焊接在集电板上时通过拉动容易断裂，并且承受小电流。 与现有技术相比，本发明实现了很大的改进。